I have managed to see the first two exams and there are mistakes in both of them. The QR codes simply lead to material that already exists on the internet. There is no organization and the mistakes will probably confuse the students.

I bombard my student with topics from this specific aid (it contains 120) and truly everything we have seen so far has at least one notable question. I believe that it can excel a student in the spirit of exams, I am more than satisfied.

Very powerful and systematic book that has undergone appropriate improvements (cuts in pages that were somewhat unnecessary). I recommend it for students who need extra help in terms of assimilating problem-solving techniques.